Axillary lymph nodes

The axillary lymph nodes - Lymphonodi (Lnn.) Or Nodi lymphatici (Nll.) Axillares - are the lymph nodes of the axillary region. In humans, the 20 to 30 lymph nodes are divided into the deep and superficial axillary lymph nodes, which are joined by other individual lymph nodes.

Axillary lymph nodes of man

The superficial axillary lymph nodes ( Nll.axillares superficiales ) are divided into three groups:

The first group lies along the axillary vein and receives its inflow from the arm.
The second group is located on the lower edge of the pectoralis minor muscle and receives lymph from the mammary gland and the anterior and lateral trunk walls above the navel .
The third group is located on the subscapular artery and receives lymph from the back of the chest , shoulder, and neck .

The deep axillary lymph nodes ( Nll. Axillares profundi ) are the secondary filter station for the lymph of the superficial axillary lymph nodes. The lymph drains from the deeper ones via a lymphatic vessel ( Truncus subclavius ), which pours into the Ductus lymphaticus dexter on the right side of the body and on the left into the Ductus thoracicus .

In addition to these two axillary lymph node groups, other lymph nodes are counted as axillary lymph nodes:

The Nll. axillares cubitales lie on the basilica vein above the flexor side of the elbow joint and receive the lymph from the forearm .
The Nll. axillares brachiales are located on the cephalic vein between the pectoralis major muscle and the deltoideus muscle and receive their inflows from the arm.
The Nll. axillary interpectorales are located between the pectoralis major and minor muscles and filter the lymph from the mammary gland.

The Nll. axillary apicales lie medial to the pectoralis minor muscle in the Mohrenheim pit .

Armpit Lymph Nodes of Pets

In animal anatomy, the axillary lymph nodes are grouped together to form the axillary lymph center, Lymphocentrum axillare . Here, too, a distinction is made between several groups according to location:

The Lnn. axillary proprii lie at the exit of the subscapular artery. They are absent in pigs.
The Lnn. axillary primae costae lie against the first rib of the chest wall. They are not trained in dogs and horses.
The Lnn. axillary accessorii occur regularly only in cats and are located at the level of the third rib on the lateral thoracic vein . Occasionally they are also trained in dogs or ruminants.
The Lnn. cubitales are only trained in horses. They are located on the inside of the elbow joint and can be felt through the skin in slim animals.

literature

Gert-Horst Schumacher: Topographical Human Anatomy . 5th edition. Thieme-Verlag, Leipzig 1988, ISBN 3-7404-0091-9 .
Uwe Gille: Cardiovascular and immune system, Angiologia . In: Franz-Viktor Salomon u. a. (Ed.): Anatomy for veterinary medicine . 2nd edition. Enke-Verlag, Stuttgart 2008, ISBN 978-3-8304-1075-1 , pp. 404-463.